#include "cdabs.h"

// This file contains functions to find out whether the given argument belongs to a certain class

int Adjacency::is_alns()
//Function to find out if this a Alternate class
{
  return(ns->is_alns());
  }
  
int Neighbors::is_alns()
{
 return (FALSE);
 }

int Alternat_ns::is_alns()
{
 return (TRUE);
 }

int Any_vertex::is_optional()
//Function to find out if this an Optional term 
{
 return (FALSE);
 }

int Optional_term::is_optional()
{
 return (TRUE);
 }